摘要
采集湘西烟区488个土壤样本,分析其速效钾含量分布及影响因素。结果表明:1.湘西植烟土壤速效钾含量总体处于适宜水平,平均值为183.675 mg/kg,变幅在22.592～533.333 mg/kg,变异系数为51.78%,处于适宜范围内的样本占27.10%。2.其在空间分布上呈从西北向东南方向递减的趋势,在古丈县和芦溪县是一个低值区。3.前茬为烤烟和玉米的土壤速效钾含量高于其他前茬作物土壤。4.黄棕壤的速效钾含量高于其他土壤类型。5.植烟土壤速效钾含量有随海拔、pH值和有机质含量的升高而升高的趋势。
The distribution of available K contents in tobacco growing soils and its influencing factors were analyzed by collected 488 soil samples in Xiangxi of Hunan,China.The results were as follows：1.available K contents in the tobacco soil is generally suitable for tobacco cultivation with a mean of 183.675 mg/kg,amplitude of 22.592 ～533.333 mg/kg and variation coefficient of 51.78％.About 21.70％ of the soil samples of available K contents is suitable for tobacco cultivation.2.IDW interpolation map indicated that the spatial distributions of available K were regularly distribution and reduced from the north-west to the east-south.The low value area of available K contents were in Luxi county and Guzhang county.3.The available K contents of soil following flue-cured tobacco and corn crop were higher than the other.4.The average content of available K in yellow-brown soil was higher than the other soil types.5.The available K contents were increasing with the rise of altitude,the rise of pH and the rise of soil organic matter.
出处
《山地学报》
CSCD
北大核心
2013年第5期519-526,共8页
Mountain Research
基金
国家烟草专卖局特色优质烟叶开发重大专项"中间香型特色优质烟叶开发"(ts-02)资助~~
关键词
植烟土壤
速效钾
空间分布
影响因素
湘西烟区
tobacco-growing soil
available K
spatial distribution
influencing factors
Xiangxi tobacco growing areas
作者简介
邓小华（1965-），湖南冷水滩人，博士，教授，主要从事烟草科学与工程技术研究。
